How do we know Christ defends His people?

Christ defends His people by becoming their surety and standing between them and all their enemies, including sin, the law, and the devil. As highlighted in the sermon, He satisfied divine justice on the cross and advocates for believers before the Father, ensuring they are received as righteous. These truths are illustrated through the story of Mary; Christ defended her against her accusers, affirming her actions and the authenticity of her heart's response to Him. This defense is a reflection of His unchanging commitment to His people, as depicted in Romans 8:33-34.